Android通知Notification

╰半夏微凉° 2023-10-16 21:07 1阅读 0赞

一个小demo。点击 发送通知 按钮，则发送通知到设备的通知栏。点击 清除通知 则清除通知栏上的消息通知。

package zhangphil.notification;
    
    import android.os.Bundle;
    import android.view.View;
    import android.widget.Button;
    import android.app.Activity;
    import android.app.Notification;
    import android.app.NotificationManager;
    import android.support.v4.app.NotificationCompat;
    
    public class MainActivity extends Activity {
    
    	private final int NOTIFICATION_ID = 105;
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		Button send = (Button) findViewById(R.id.send);
    		send.setOnClickListener(new View.OnClickListener() {
    
    			@Override
    			public void onClick(View v) {
    				sendNotification();
    			}
    		});
    
    		Button clear = (Button) findViewById(R.id.clear);
    		clear.setOnClickListener(new View.OnClickListener() {
    
    			@Override
    			public void onClick(View v) {
    				clearNotification();
    			}
    		});
    	}
    
    	private void sendNotification() {
    
    		NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    
    		NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
    				this);
    		mBuilder.setSmallIcon(R.drawable.ic_launcher);
    		mBuilder.setContentTitle("通知的标题");
    		mBuilder.setContentText("通知的内容");
    
    		Notification notification = mBuilder.build();
    
    		// 缺省设置为当发送通知到通知栏时候：提示声音 + 手机震动
    		notification.defaults = Notification.DEFAULT_SOUND
    				| Notification.DEFAULT_VIBRATE ;
    
    		// 通知的时间
    		notification.when = System.currentTimeMillis();
    
    		// 发送到手机的通知栏
    		notificationManager.notify(NOTIFICATION_ID, notification);
    	}
    
    	private void clearNotification() {
    		NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    		notificationManager.cancel(NOTIFICATION_ID);
    	}
    }

需要的activity\_main.xml